Add DesignWare dsi host driver for hi6220 SoC.
Signed-off-by: Xinliang Liu <xinliang.liu@xxxxxxxxxx>
v3: None.
v2:
- Remove abtraction layer.
---
drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c | 50 ++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c
index 7c9423537b71..2837af01e935 100644
--- a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c
+++ b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c
@@ -79,6 +79,7 @@ struct dsi_hw_ctx {
struct dw_dsi {
struct drm_encoder encoder;
+ struct mipi_dsi_host host;
struct drm_display_mode cur_mode;
struct dsi_hw_ctx *ctx;
struct mipi_phy_params phy;
@@ -642,6 +643,51 @@ static int dw_drm_encoder_init(struct device *dev,
return 0;
}
+static int dsi_host_attach(struct mipi_dsi_host *host,
+ struct mipi_dsi_device *mdsi)
+{
+ struct dw_dsi *dsi = host_to_dsi(host);
+
+ if (mdsi->lanes < 1 || mdsi->lanes > 4) {
+ DRM_ERROR("dsi device params invalid\n");
+ return -EINVAL;
+ }
+
+ dsi->lanes = mdsi->lanes;
+ dsi->format = mdsi->format;
+ dsi->mode_flags = mdsi->mode_flags;
+
+ return 0;
+}
+
+static int dsi_host_detach(struct mipi_dsi_host *host,
+ struct mipi_dsi_device *mdsi)
+{
+ /* do nothing */
+ return 0;
+}
+
+static const struct mipi_dsi_host_ops dsi_host_ops = {
+ .attach = dsi_host_attach,
+ .detach = dsi_host_detach,
+};
+
+static int dsi_host_init(struct device *dev, struct dw_dsi *dsi)
+{
+ struct mipi_dsi_host *host = &dsi->host;
+ int ret;
+
+ host->dev = dev;
+ host->ops = &dsi_host_ops;
+ ret = mipi_dsi_host_register(host);
+ if (ret) {
+ DRM_ERROR("failed to register dsi host\n");
+ return ret;
+ }
+
+ return 0;
+}
+
static int dsi_bind(struct device *dev, struct device *master, void *data)
{
struct dsi_data *ddata = dev_get_drvdata(dev);
@@ -653,6 +699,10 @@ static int dsi_bind(struct device *dev, struct device *master, void *data)
if (ret)
return ret;
+ ret = dsi_host_init(dev, dsi);
+ if (ret)
+ return ret;
+
return 0;
}
--
1.9.1
--
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